heat indices
Coverage of heat indices in the Nexus archive.
- Aug. 14: Heat indices to reach into the triple digits
Heat indices are expected to reach into the triple digits today, prompting a heat advisory from 11 a.m. until 7 p.m. Storm chances will remain slightly closer to inland Broward and Miami-Dade areas this afternoon. Over the weekend, Saharan dust is returning, which will create hot, hazy conditions, with Sunday specifically predicted to be the hotter, drier day.
- Aug. 8: The heat is on again today
Temperatures reached 92 degrees in Miami and are set to remain warm through Saturday night, with lows falling into the lower 80s by Sunday morning. While rain may linger or showers could move onshore initially, dry air is expected on Sunday afternoon, leading to highs in the lower 90s and heat indices possibly reaching triple digits. Due to elevated rip current risk, the public is advised to avoid getting in the water unless supervised by a lifeguard.
- Record Heat Possible Friday Before Rain Chances Rise
Record heat is expected in Miami and Fort Lauderdale on Friday with temperatures in the mid-90s and heat indices in the 100s. Rain chances will increase Friday afternoon as moisture expands across Florida, leading to scattered storms this weekend and into next week, with temperatures gradually cooling to near-normal levels.
- Many of city’s cooling centers closed amid dangerous heat
New Orleans is experiencing dangerously high heat indices up to 115 degrees, with eight of 13 city-run cooling centers closed for post-summer maintenance, limiting public access to relief during peak heat. The city’s heat relief map incorrectly lists all centers as open, and some will remain closed until after the heat wave subsides.
- July 28: Mild start to the day with temps in the upper 70s, lower 80s
The day starts mild with temperatures in the upper 70s and lower 80s, but afternoon highs will reach the lower 90s with heat indices in the triple digits. Afternoon storms are expected, bringing potential wind gusts and flooding concerns, with rain chances decreasing tomorrow due to Saharan dust.
- July 27: Temps mild this morning; afternoon storms expected
The morning starts with mild temperatures in the upper 70s to lower 80s, but afternoon highs will rise to the lower 90s with heat indices in the triple digits. Afternoon storms are expected, bringing potential wind gusts and flooding concerns. Local 10 is the source for updates.
- July 24: Few early showers; mostly dry this afternoon
On July 24, a few early morning showers are expected with mostly dry conditions in the afternoon. High temperatures will reach the low 90s with heat indices up to 105 degrees, and a better chance of showers is anticipated this weekend, particularly affecting Miami-Dade and Broward coastal areas.
- July 23: A few early showers this morning; mostly dry in the afternoon
The morning will have a few early showers with temperatures in the mid-80s and heat indices in the 90s. Afternoon conditions are mostly dry, with high temperatures reaching the low 90s and heat indices up to 105 degrees. A better chance for showers returns tomorrow and into the weekend.
- July 22: Summer heat and ‘here/there’ storms
South Florida's western counties will see diminishing showers and storms Wednesday night, with Miami-Dade and Broward experiencing tranquil conditions and temperatures dropping to the low 80s. Thursday brings a mix of sun and clouds, with possible showers or storms and temperatures reaching the low 90s, accompanied by heat indices exceeding 100°F.
- July 21: South Florida remains on drier side of Bertha
South Florida remains between Tropical Storm Bertha in the northern Gulf and high pressure in the Atlantic, resulting in low rain chances and rising temperatures. Coastal showers may affect Wednesday morning commutes, with storms moving inland by afternoon, while highs stay in the lower 90s.
- July 19: Bertha likely to form, hot temps continue
Tropical Depression Two formed in the Gulf and is expected to become Tropical Storm Bertha as it moves northwest, remaining away from South Florida. Indirect impacts include passing showers on Monday morning, with scattered storms and heavy rain possible later. Miami is forecast to reach 93°F with heat indices over 105°F.
- July 6: Afternoon storms continue before drier air arrives midweek
Hot and humid conditions with temperatures in the lower 90s will lead to afternoon storms along the sea breeze, producing heavy rainfall and lightning. Saharan dust will reduce rain chances midweek, bringing haze and higher temperatures by the weekend.
- July 6: Early showers to start the week
The week begins with early showers and high temperatures in the low 90s, with heat indices reaching 103-108 degrees. Afternoon storms linked to sea breeze development may bring flooding concerns, followed by Saharan dust mid-week that will reduce rain chances and increase temperatures.
- July 3: Holiday weekend starts off much drier, warmer than yesterday
The holiday weekend begins with drier and warmer conditions, with high temperatures in the low 90s and heat indices reaching 103-108 degrees. Afternoon storms driven by sea breezes are expected, potentially causing flooding concerns, though showers should end by evening for fireworks celebrations.
- Heat exhaustion vs heatstroke: How to tell the difference and what you should know
Heat exhaustion and heatstroke are severe heat-related illnesses with distinct symptoms and risks. Heat exhaustion involves heavy sweating, dizziness, and weakness, while heatstroke—a life-threatening condition—can cause high body temperature, confusion, and unconsciousness. Medical attention is critical for both, with immediate 911 calls required for heatstroke.
- July 1: Afternoon storms could bring some flooding
July 1 will be hot and humid with temperatures in the low 90s and heat indices reaching 103-105 degrees. Afternoon storms driven by a sea breeze are expected, potentially bringing strong to low-end severe weather and flooding concerns. This marks a change from the dry end of June.
- Extreme Heat Warning in effect until late Thursday / early Friday
An extreme heat warning is in effect until late Thursday or early Friday due to dangerous heat and humidity. Afternoon heat indices are expected to range between 103 and 110 degrees.
- Philadelphia heat wave: City declares heat emergency ahead of triple-digit temps. Here’s what to know
Philadelphia has declared a heat emergency as triple-digit temperatures and high heat indices are expected from Wednesday to Friday, posing significant risks to vulnerable populations. The National Weather Service described the event as unusually severe, potentially the hottest since July 2011.
- Extreme Heat Warning in effect for Southeast Michigan through Thursday evening
An Extreme Heat Warning is active in Southeast Michigan through Thursday evening, with temperatures reaching mid-90s to near 100°, high humidity causing heat indices of at least 105°, and minimal nighttime relief. A Saharan dust event will create vivid sunsets before a chance of rain cools temperatures to around 95° by Friday.
- June 30: Broward brush fire pushes some smoke, haze towards metro areas
A brush fire in inland Broward County is pushing smoke and haze toward metro areas, coinciding with a hot, humid day featuring mid-90s temperatures and heat indices up to 110 degrees. Afternoon storms are expected but will remain isolated, while a shift in wind direction later today will move the smoke inland over the Everglades.
- June 29: Another hot, humid day with afternoon storms
June 29 will be hot and humid with high temperatures in the mid-90s and heat indices reaching 100-108 degrees. Afternoon storms are expected due to the sea breeze, but most metro and coastal areas will remain dry. Saharan dust will cause hazy conditions, and a brush fire in inland Broward County is pushing smoke inland over the Everglades.
- Extreme Heat Watch issued for Southeast Michigan: what to expect this week
An Extreme Heat Watch has been issued for Southeast Michigan from Tuesday at 12:00pm to Thursday at 8:00pm, with temperatures reaching up to 100° and heat indices near 110°. The National Weather Service warns of extreme heat risks, urging residents to stay hydrated, avoid strenuous activity, and check on vulnerable individuals.
- June 26: Another hot, humid day with afternoon storms expected
June 26 is expected to be a hot and humid day with high temperatures in the mid-90s and heat indices reaching 100-106 degrees. Afternoon storms driven by sea breeze will be isolated, leaving much of the metro and coastal areas dry. Saharan dust is affecting weather patterns, limiting rain chances and causing hazy sunrises and sunsets.
- Showers exit early, but isolated strong storms possible this afternoon
Rain showers in Southeast Michigan are expected to clear by morning, with isolated thunderstorms possible this afternoon, particularly north of I-69. A heatwave with temperatures potentially reaching the upper 90s and high heat indices is forecasted for early next week, accompanied by periods of showers and thunderstorms.
- Scattered storms, flood risk amid high heat indices
Scattered storms are expected today, offering a brief cooldown amid returning triple-digit heat indices. Flood risk is also present due to the storms.
- 6/12/26: Weekend Brings Relief From Brutal Humidity
The article reports a sweltering day with highs in the lower 90s and heat indices in the middle to upper 90s, marking the fourth consecutive day in the 90s. Relief from high humidity is expected by the weekend.
- Newark activates Code Red as heat indices soar
Newark has activated a Code Red due to extreme heat, with heat indices reaching up to 102 degrees from noon on Thursday until 8 p.m. on Friday. Officials warn of the extreme heat and poor air quality in the tri-state area.
- Chicago Could See Rain Every Day Through Thursday, With Heat Also On The Way, Weather Service Says
Chicago is expected to experience rain and thunderstorms daily through Thursday, with heat indices reaching the upper 90s. A cold front arriving Thursday night will bring cooler temperatures and reduced humidity, followed by mostly sunny and milder weather over the weekend.
- June 2: Record high possible today with afternoon storms
Today, June 2, record high temperatures are possible with afternoon storms expected to bring strong to severe weather. Miami-Dade broke a record high yesterday, and similar conditions could occur today before storms persist until Thursday.
- May 29: Hot, humid, & stormy at times
The last weekend of May will bring hot, humid, and stormy weather to South Florida, with scattered showers and storms affecting Miami-Dade and Broward counties. Temperatures are expected to reach the low 90s, with heat indices peaking near 100°F.